Mammaria-Spreizer Thoracic and I.M.A. Retractor – Internal Mammary Artery Harvesting Instrument
The Mammaria-Spreizer is a specialized thoracic retractor engineered for internal mammary artery (IMA) harvesting during coronary artery bypass grafting (CABG). Its precisely angled blades create optimal sternal retraction and exposure of the internal mammary artery bed, enabling cardiac surgeons to harvest the IMA graft with maximal visibility and minimal tissue trauma.
This retractor features a robust ratcheted spreading mechanism that delivers controlled, incremental sternal separation. It is indispensable in cardiothoracic surgery departments performing CABG, sternal re-entry, and anterior mediastinal procedures.
Key Features
- Premium Stainless Steel Construction: Manufactured from AISI 410 martensitic German-grade Stainless Steel for exceptional strength and durability under heavy mechanical loads
- Asymmetric Blade Design: Upper and lower blades specifically contoured for IMA bed exposure with minimal rib cage stress
- Ratcheted Spreading Mechanism: Controlled incremental opening prevents sudden tissue displacement and reduces sternal fracture risk
- Low-Profile Frame: Compact design minimizes interference with surgical instrumentation and suturing access
- Fully Autoclavable: Withstands repeated steam sterilization at 134°C without mechanical degradation
Clinical Applications
- Internal mammary artery harvesting for CABG procedures
- Coronary artery bypass graft surgery sternal retraction
- Anterior mediastinal access and exposure
- Sternal re-entry procedures in revision cardiac surgery
- Thoracic surgery requiring controlled sternal spreading
Why Choose Fizza Surgical?
Every Mammaria-Spreizer retractor from Fizza Surgical International is precision-manufactured in Sialkot, Pakistan — the global hub for surgical instrument production. Our instruments meet international quality standards including CE marking, ISO 13485 quality management, and ISO 7153-1 stainless steel specifications.
We offer OEM manufacturing, custom logo engraving, private label packaging, and competitive wholesale pricing for hospitals, cardiac surgery centers, and medical distributors worldwide.

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